/*
 * Copyright 2010 Assert Developments
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * 	http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.google.inject.factory;

import java.util.Collections;
import java.util.HashMap;
import java.util.Map;

/**
 * A factory that binds a class to a name constant.
 *
 * @author Stefan Bangels
 */
public final class NamedFactory<T> extends AbstractGuiceFactory<T> {

    private final Map<String, Class<? extends T>> bindings =
            Collections.synchronizedMap(new HashMap<String, Class<? extends T>>());

    /**
     * Get the map of bindings.
     *
     * @return a map of bindings
     */
    protected Map<String, Class<? extends T>> getBindings() {
        return bindings;
    }

    /**
     * Looks up the class for the specified name constant.
     *
     * @param name the identifier
     * @return the class, or null when it's unbound
     */
    @Override
    protected Class<? extends T> getBinding(String name) {
        return getBindings().get(name);
    }

    /**
     * Binds the specified class to a name constant.
     *
     * @param name  the name
     * @param clazz the class
     */
    @Override
    protected void bind(String name, Class<? extends T> clazz) {
        getBindings().put(name, clazz);
    }

}
